Gap
1. In order to check the oil gap between the main journal and the bearing, remove the main caps and liners.
2. Clean the main journal and bearing shell with a clean rag.
3. Install one plastic measuring plate across each main journal.
Note: If, when measuring the gap between the cover liner and the main journal, the engine is installed on a car, the weight of the crankshaft and flywheel affects the deformation of the measuring plate and we get an incorrect result. To get an accurate reading, place a jack under the crankshaft journal counterweight and check the clearance on that journal only.
4. Install the liners and covers and tighten the bolts.
Stage 1: Microdistrict = 25 Nm
The final stage:
Engines V16A2, V16A4, V16A5, V16A6:
- Microdistrict = 76 Nm
Engines D15Y4, D16Y5, D16Y6, D16Y7, D16Y8, D16Y9, D16Z6:
- Microdistrict = 51 Nm
Engines D14A3, D14A4, D15Z1, D15Z4, D15Z5, D15Z6, D15Z7, D13B2, D15B2, D15B7:
- Microdistrict = 44 Nm
Note: Do not rotate the crankshaft while checking.
5. Remove the covers and liners and measure the widest part of the deformed measuring plates.
Oil gap between main bearing and journal:
Engines V16A2, V16A4, V16A5, V16A6:
Standard value:
- Necks No. 1, 2, 4, 5: 0.024-0.042 mm
- Neck No. 3: 0.030-0.048 mm
Operational value: 0.06 mm
Other engines:
Standard value:
- Necks No. 1, 5: 0.018-6.036 mm
- Necks No. 2, 3, 4: 0.024-0.042 mm
Operational value: 0.05 mm
6. If the size of the deformed plate is too wide or too narrow, (remove the engine if it is still in the engine), remove the crankshaft and remove the upper bearing shell. Install a new one, selecting the liner of the corresponding color code (select color as shown on next page) and check the gap again.
Attention. Do not file, shim, or scrape bearings or caps to adjust clearance.
7. If the warped plate shows a gap that is still not optimal, use a larger or smaller insert (choosing a color higher or lower than the one used) and measure again.
Note: If the required clearance cannot be obtained using a larger or smaller bearing, replace the crankshaft and measure again.
Selection
Attention. If markings cannot be deciphered due to dirt and dust accumulation, do not remove them with a wire brush or scraper. Clean them only with solvent or powder.
Location of crankshaft hole markings
Engines V16A2, V16A4, V15A5, V16A6:
The letters are printed on the bottom plane of the block, as a code for the size of each of the 5 holes for the main journals. Use them and numbers or stripes printed on the crank (main journal size code) to select the correct inserts.
Other engines:
The letters are printed on the bottom plane of the block as a code for the size of each of the 5 holes for the main journals. Use them and numbers or stripes printed on the crankshaft (main journal size code) to select the correct inserts.